Means for driving the shafts of cigarette machines



Feb. 28",i 1928.

f 1,660,527 c. F. RBl-:R

MEANS FOR DEIIVI'NQTHE sHAETs 0E CIGARETTE MACHINES Fil'e v4'July 18',1924 Patented FebaZS, 1928i. l' n v umrEnsTArEs 1,660,527 PATENT OFFICEYv`coNsrnNcLrN FRIEDRICH RRER, or DRESDEN, GERMANY; AssiGNoR To UNIVER-GERMANY.

. ELLE" CIGARETTENMAscHINEN-EABRIK, J. o. linfin-LER & ooi, 70E nREsnEN,

MEANS EORDRIVING 'rHEsHAErs 0E CIGARETTEMAGHINES.

Application filedk July 18, y1924, Serial No.

This invention relates to means for intermittent driving of the `shaftsof cigarette machines and in particular the coiling mandrels ofcigarette shell or case machines. l

In intermittent rotation it is usual in the art to employ a rack adaptedyto be reciprocated suitably (for example by means of a crank andconnecting rod m-echanism) which meshes with a pinion mounted on theshaft. If unidirectional rotation of the shaft is desired then duringits return movement the' rack is brought out of engagement with thepinion. `The ceiling mandrel of cigarette shell machines has alreadybeen l5 driven in this way.

Under the present invention a rack is used for driving the shaftof thecoiling mandrel but in accordance with thev present invention this rackis connected with a parallel. crank 2O and'connecting rod mechanism insuch manner that the rack is moved in a plane which is normal to theplane of the pinion to be driven. Thus the line of the d-ead centres ofthe double crank and connecting rod mechanism lies in the plane of thepinion to be driven. As a result the rack in its movement into and outof engagement withv thel teeth of the pinion to be driven performsamovement transverse to the plane of thepinion to be driven at themomentwhen the 'displacement of the rack in the direction of the plane of thepinion to be driven is equal to zero or approximately equal to zero. Theparallel crank and connecting rod mechanism ensures a uniform movementof .l the points of the rack which all perform the same circularmovement. f The rack does not require to be raised or lowered so thatthe controlling means which would otherwise bev gages with this pinionat regular intervals inl a manner to be described subsequently.

crank pins 7 8 with two crank discs 9 and 10 rotating in a horizontalplane. The crank discs are mounted on the vertical spindles 11, l2, ofwhich spindle 12 is driven by the The ends of the rack are connected bythe 7a6,888,.an 1 inwcafnmniy March 22, 1824.

bevel gearV 13, its rotary movement being transmitted through thepinions 13a, 14E, and 15 Ion the spindle 11.

The line connecting the dead centres ofl the crank discs the crank pinsmove into the other vdead y, centre positionthe rack 6 passesdirectly'in front of the pinion 5 to vbe driven. The rack thus has amovement substantially at-right angles tothe plane of the pinionv 5 sothat the teeth of the` rack engage in a smooth and'frictionless mannerwithl the teeth of the pinion 5. The same may be said of thedisengaging, movement of the rack from the teeth of the pinion 5.

Having now particularly ydescribed and ascertained the nature of my saidinvention and lin what manner the same is to kbe performed, I declarethat what I claim is 1. In an intermittent motion mechanism, a pinionadapted to be rotated intermittently inone direction, a rack adapted toengage said pinion, means for imparting longitudinal movement to therack, and causing a sidewise movement to the rack in the same planewiththe teeth of the pinion, whereby said rack will engage said pinion fordriving it during the longitudinal movement thereof in one direction andwill be moved into and out kof engagement therewith by said side- Wisemovement. y

2. In an intermittent .motion mechanism, a

pair of spaced crank disks, a connecting rod therebetween including arack, means for rotating said disks so as to impart longitudinal andsidewise reciprocations .to said connecting rod, a pinion adapted to beengaged to be rotated by said rack during its longi-f tudinal movementin one direction and to be disengaged from the rack by the sidewisemovementthereof in one direction yand to be engaged again bythesidewise-movement in the opposite direction following the returnlongitudinal reciprocating movement.

3. In an intermittent motion mechanism, a

pinion adapted to be rotated intermittently in one direction, a rrackadapted to engage said pinion, .means for imparting longitudinalreciprocation to said rack, and causing a sidewise reciprocation to saidrack infa pla-ne with the teeth ot theipinion `and -toca'nse the rackdisengage the pinion,

4i. in an intermittent motion mechanism, a pinion adapted to be rotatedintermittently in one d'rection, apair off spaced cnzinkdisks,` aconnecting rod including a rack, means` for rotating said disks Aso asto impart 1ongitudinai and sidewise reciprocation to saidV- connectinglrod, said `sideivise reciprocationV 'being in a pla-ne with the teeth ofvthe pinion,

ing said pinion, 'means toi' imparting longi-` tiidinal reciproca-tions`to said rack andv sii'nnltaneonsly causing the rack to move in a pia-neparallel withV the teeth of the pinion,` w-hei'ehy :the "pinion isrotated `by 4theyreck dn-ring its entire longitudinal movement in.

one direction and to be engaged and disengaged therefrom by the sidewisemovement at the Jheg-inningand tending of the 1ongitudnai movement.

an elongated pinion adapted to be rotated in- Yeimittentiy in onedirection, a rack `adapted `to `en-gage lsaid i-pinion,l means forimpartin a longitudinalreciprocation to said rack ancgl einiidtaneously"causing the rack fto move 6.111 anintermititenbmetion. mechanism,

sideWise in a plane with the teeth of th'epinion` and to cause the rackto disengagethe pinion when at a point oit' its ,movement in onedirection and'to engage the rack atthe 'beginning fot' its movement inthe saine direcf tion. o In testimony whereof I atix my signature.CONSTANTIN FRIEDRICH RBERQ

